Polar Bears May Soon become Extinct Due to Plane Travel
Melting summer sea ice makes it harder for polar bears for hunt seals and other prey. Some researchers think if the world doesn't do more to cut its carbon emissions, all summer Arctic sea ice will be gone by 2040.
(Picture: NTB Scanpix)
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![Dr. E. Poonguzhali has successfully transferred commercially available starting materials to medicinally important 2-acylbenzo[b]thiophenes in the presence of copper acetate & tetrabutylammonium chloride catalytic system.](https://cdn1.vogel.de/ZK7wqjVy7Ps1OSwUs5tXgrNZGEE=/288x162/smart/filters:format(jpg):quality(80)/images.vogel.de/vogelonline/bdb/1964500/1964559/original.jpg "Dr. E. Poonguzhali has successfully transferred commercially available starting materials to medicinally important 2-acylbenzo[b]thiophenes in the presence of copper acetate & tetrabutylammonium chloride catalytic system.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963700/1963740/original.jpg "The high resolution, modern TFT touch display has a multi-lingual user interface and shows all important information at a glance.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963400/1963417/original.jpg "The 700kHz, 260-element histotripsy ultrasound array transducer used in Prof. Xu’s lab.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963800/1963885/original.jpg "Anna-Lisa Paul, left, and Rob Ferl, working with lunar soils in their lab.")
:quality(80)/images.vogel.de/vogelonline/bdb/1962400/1962494/original.jpg "The operating room produces 70 percent of hospitals' greenhouse gas emissions, but two surgeons-in-training have come up with solutions to reduce that number.")
:quality(80)/images.vogel.de/vogelonline/bdb/1960700/1960778/original.jpg "This plant is modeling the latest wearable sensor (right) to monitor water loss from leaves with a smartphone app (left).")
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:quality(80)/images.vogel.de/vogelonline/bdb/1710600/1710675/original.jpg "Discover how to set yourself up for success when performing balance-based density determination of solids such as jewelry and precious metals.")
:quality(80)/images.vogel.de/vogelonline/bdb/1682500/1682579/original.jpg "The new XPR Analytical balance redesigned to meet the needs of laboratory technicians of working fast and lean.")
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/cdn4.vogel.de/infinity/white.jpg "Melting summer sea ice makes it harder for polar bears for hunt seals and other prey. Some researchers think if the world doesn't do more to cut its carbon emissions, all summer Arctic sea ice will be gone by 2040.")
